Skip to content

ZWO Off-Axis Guider for Astrophotography

1.Lightweight, 16.5mm thickness
2.large prism:8*8mm
3.Connect the main imaging camera and the guide camera. No guide scope required!
4.Flexible adaption to your camera and telescope , such as M42 and M48.
5.Fully compatible with all ZWO ASI cameras
6.Good stability , strong connection to the telescope

OGA-1OGA-2

OGA-3
ZWO OAG comes with all adapters you will need for imaging and guiding.

Package includes:

OGA

1. OAG body(with 1.25″ holder and 5mm extender and M42 adapter)

2. M48 adapter for main imaging camera(in the box)

3. M48-M42 adapter for telescope and flat lens(in the box)

4. Hexagon wrench(in the box)

Mechanical Diagram

OAG-DRAWConnecting Diagram:

OAG

Usage Guider:

1. please caculate the correct required distance for your imaging train at first

for example: you need to attach 21mm extender to ASI071 to reach 55mm back focus distance:17.5mm+21mm+16.5mm=55mm

2. Take off the guider prism part and attach OAG body to the telescope

3. I nsert the prism part into the OAG body

oagset4_1200x1000

4. Mount the guide camera

oagset5_1200x1000

5. Screw the T2 or M48 adaper on the imaging camera according to your the mount type

oagset6_1200x1000

6. Mount the camera on the OAG in correct position and lock the 3 screws

oagset7_1200x1000

7. The final setup

oagset8_1200x1000

Note: please make sure the prism won’t block the imaging area

Use the guiding screw to adjust the guiding camera’s focus.

You’d better do it at day time to make sure imaging camera and guiding camera can reach focus at the same position.

oagset8_1200x1000c

Specifications